51131244213115 has 32 divisors (see below), whose sum is σ = 69183215410176. Its totient is φ = 35956664232960.

The previous prime is 51131244213107. The next prime is 51131244213121.

51131244213115 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51131244213115 - 2³ = 51131244213107 is a prime.

It is a super-2 number, since 2×51131244213115² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118941942 + ... + 119371051.

It is an arithmetic number, because the mean of its divisors is an integer number (2161975481568).

Almost surely, 2^{51131244213115} is an apocalyptic number.

51131244213115 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51131244213115 is a deficient number, since it is larger than the sum of its proper divisors (18051971197061).

51131244213115 is a wasteful number, since it uses less digits than its factorization.

51131244213115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238313139.

The product of its digits is 14400, while the sum is 34.

It can be divided in two parts, 5113124 and 4213115, that added together give a palindrome (9326239).

The spelling of 51131244213115 in words is "fifty-one trillion, one hundred thirty-one billion, two hundred forty-four million, two hundred thirteen thousand, one hundred fifteen".